The abbreviation, RP, is described and translated as:

Select one:

a.

Retrograde pyelogram, image of the renal pelvis produced by injecting a contrast dye from the bladder to the kidney.

b.

Renal problem, a problem with the kidney.

c.

Renal pelvis, the holding area for urine before the body eliminates it through urination.

d.

Renal pelvis, the holding area for waste within the kidneys.